Real time map rendering with data clustering and expansion and overlay

ABSTRACT

Systems and methods are provided for the organization, management, and graphical display of multiple logically related entities. In some embodiments, the systems and methods provide the real-time display of status and location information for a fleet of tracked vehicles. In some embodiments, the systems and methods permit the automatic clustering of assets based on a user&#39;s view of an underlying map. In some embodiments, the assets are vehicles that are a part of a managed fleet. In some embodiments, the assets are logically arranged into clusters of like assets. In some embodiments, the clusters provide graphical indications of status or class information of their underlying assets.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation application of U.S. patent application Ser. No. 12/882,930, filed Sep. 15, 2010 and entitled “Real Time Map Rendering with Data Clustering and Expansion and Overlay”, which is a continuation application of International Patent Application No. PCT/US2010/45630, filed Aug. 16, 2010 and entitled “Real Time Map Rendering with Data Clustering and Expansion and Overlay”, which claims priority to U.S. Provisional Patent Application Ser. No. 61/274,221, filed Aug. 14, 2009 and entitled “Real Time Map Rendering with Data Clustering and Expansion and Overlay,” the disclosures of the foregoing applications are incorporated herein by reference to the extent they are not inconsistent with the disclosure herein.

BACKGROUND

1. Field

This invention generally relates to systems and methods for organizing, managing, and graphically displaying multiple logically related entities and, more specifically, in one embodiment, to systems and methods for the real time organization and display of clusters of tracked vehicles in connection with a geographical map.

2. Description of Related Art

As the use of electronic maps to display information has increased in popularity, so has the volume and complexity of information to be displayed. Accordingly, it has become more and more difficult to take in the wide range of data that may be overlaid and viewed on maps without the viewer becoming confused or overwhelmed by the display.

This problem is acutely expressed in the field of map-based or location-based services and took, where the ever increasingly detailed nature of the information to be displayed, together with the potentially limitless number of sources from which data is gathered, combine to make it extremely challenging to display such information on a map in a logical manner that is accessible and useful to viewers. For instance, the management of large numbers of people and equipment involves obtaining timely information about location, status, and potential alarm conditions. Management preferably wants to be able to observe when and where scheduled events have occurred and how schedules and status have changed since the previous observations, but doing so in prior systems was difficult if not impossible with so much data available. For example, in the field of fleet management, it is desirable to know the status of vehicles in a fleet, where the vehicles currently are, whether the vehicles are operating properly, etc. For fleets with hundreds or thousands of vehicles, such information quickly became overwhelming when accessed through a map-based interface.

Developers have attempted to facilitate the ease of use of such map-based displays by allowing viewers to zoom in and out of the maps at issue; however, this is often an ineffective solution since the problem of viewing an overwhelming amount of data is only amplified as the viewer zooms out to get a more general picture of the data. As a result, in order to make sense of the displayed data, the viewer's only choice is to zoom in so far on the map that important information is no longer displayed onscreen. Other systems simply operate too slowly to meet the demands of full time asset management.

SUMMARY

The present embodiments overcome these and other deficiencies of the prior art by providing systems and methods for smart zooming that cluster geographically or spatially related information together to create useful overlays of data to facilitate the management of such information. In some embodiments, the information pertains to vehicles being tracked. In some embodiments, the systems and methods provide the real-time display of status and location information for a fleet of tracked vehicles. In some embodiments, the systems and methods permit the automatic clustering of assets based on a user's view of an underlying map, which change dynamically as a user zooms in or out of a map. In some embodiments, the assets are vehicles that are a part of a managed fleet. In some embodiments, the assets are logically arranged into clusters of like assets. In some embodiments, the clusters provide graphical indications of status or class information of their underlying assets.

In some embodiments, a method for displaying information pertaining to a plurality of geographically related assets is provided. The method includes receiving information pertaining to a plurality of assets; selecting the assets from the plurality of assets that are geographically related; forming a cluster comprising the selected assets; and providing a graphical user interface comprising a geographic map and the cluster. In some embodiments, the assets, are geographically related if the physical location of the assets are within a geographic area defined by a virtual bounding area. In some embodiments, the cluster is overlayed on the geographic map in the geographic area defined by the bounding area. In some embodiments, the cluster displays on the graphical user interface at least one item of information pertaining to the selected assets. In some embodiments, the assets are vehicles. The information pertaining to the plurality of assets is, in some embodiments, updated in real time. In some embodiments, at least one item of information is a chart displaying status information for the selected assets. In some embodiments, at least one item of information is a chart displaying the class information for the selected assets. In some embodiments, at least one item of information is a numerical indication of the number of selected assets. In some embodiments, the graphical user interface displays the virtual bounding area. In some embodiments, the method also includes adding the cluster to a new cluster if a user of the graphical user interface zooms out from the geographic map. In some embodiments, the method also includes splitting the cluster into a plurality of clusters if a user of the graphical user interface zooms in on the geographic map.

In some embodiments, a method for splitting a cluster of assets is provided, where each asset has pixel coordinates based on its geospatial location and in reference to a virtual area representing an end user's display. The method, in some embodiments, comprises identifying the coordinates of each asset; dividing the virtual area into slots; grouping the assets into the slots based on each assets' pixel coordinates; and generating new clusters, wherein each new cluster comprises at least one asset and comprises every asset which was grouped into the same slot.

In some embodiments, a method for clustering assets is provided. The method, in some embodiments, includes generating pixel coordinates for each asset based on the asset's geospatial location and in reference to a virtual area representing an end user's display; determining an icon shape with specific pixel dimensions for use in connection with each asset; querying a data structure with the icon shape for each asset; adding an asset as a new cluster in the data structure if the area defined by the pixel dimensions of the asset's icon shape, when centered over the asset's pixel coordinates, does not overlap with the area covered by another cluster in the data structure; and adding an asset to an existing cluster in the data structure if the area defined by the pixel dimensions of the asset's icon shape, when centered over the asset's pixel coordinates, overlaps with the area covered by the existing cluster.

BRIEF DESCRIPTION OF THE DRAWINGS

For a more complete understanding of the present embodiments, the objects and advantages thereof, reference is now made to the following descriptions taken in connection with the accompanying drawings in which:

FIG. 1 depicts a cluster of assets, according to an embodiment.

FIG. 2 depicts a geographical map comprising a plurality of clusters, according to an embodiment.

FIG. 3 depicts additional informational features available to the user of the system, according to one embodiment.

FIG. 4 depicts informational features available to the user of the system when a duster contains a large number of assets, according to an embodiment.

FIG. 5 illustrates a scrollable list of a cluster's assets, according to an embodiment.

FIGS. 6A and 6B illustrate the function of clusters with reference to a specific geographical location, according to an embodiment.

FIG. 7 illustrates is a flow chart describing the creation of a cluster, according to an embodiment.

FIGS. 8A through 8D depict a graphical example of the steps carried out in FIG. 7, according to an embodiment.

FIGS. 9A, 9B, and 9C depict a process for splitting a cluster, according to an embodiment.

FIG. 10 illustrates items being moved from odd slots to even slots during the splitting process, according to an embodiment.

FIG. 11 depicts a sample cluster with reference to a display screen that is to be split, according to an embodiment.

FIG. 12 depicts the location of a cluster's items with reference to a display screen, according to an embodiment.

FIG. 13 illustrates a cluster being split, according to an embodiment.

FIG. 14 shows the creation of new clusters from a single prior cluster, according to an embodiment.

FIG. 15 illustrates three new clusters after completion of the splitting process, according to an embodiment.

FIG. 16 depicts an overall system diagram of components and devices used in connection with embodiments.

Corresponding reference characters indicate corresponding components throughout the several views of the drawings. Skilled artisans will appreciate that elements in the figures are illustrated for simplicity and clarity and have not necessarily been drawn to scale. For example, the dimensions, sizing, and/or relative placement of some of the elements in the figures may be exaggerated relative to other elements to help to improve understanding of various embodiments of the present invention. Also, common but well-understood elements that are useful or necessary in a commercially feasible embodiment are often not depicted in order to facilitate a less obstructed view of these various embodiments of the present invention. It will also be understood that the terms and expressions used herein have the ordinary meaning as is usually accorded to such terms and expressions by those skilled in the corresponding respective areas of inquiry and study except where other specific meanings have otherwise been set forth herein.

DETAILED DESCRIPTION OF THE DRAWINGS

Further features and advantages of the present embodiments, as well as the structure and operation of the various embodiments, are described in detail below with reference to the accompanying FIGS. 1-16. The embodiments are described in the context of a system for displaying clusters of tracked vehicles on a map. Nonetheless, one of ordinary skill in the art readily recognizes that these embodiments are applicable in numerous fields and contexts which require the display of multiple disparate pieces of information in a useful manner, and particularly with respect information with geographical or special components, such as real estate information, package or delivery information, communications information, etc.

Referring now to FIG. 1, depicted is a cluster 100. The cluster 100 provides information about underlying assets in a specific geographical or spatial location, defined by a bounding area 102. The cluster 100, in some embodiments, comprises a numerical value 104 and an inner chart 106. In some embodiments, the cluster 100 comprises an outer chart 108, or additional charts or graphical information (not depicted). For example, if the assets are vehicles, then the numerical value 104 displays the number of vehicles within the cluster 100, and the charts 106 and 108 provide detailed class and status information about those vehicles. Inner chart 106, for example, contains color coded class information for each asset in the cluster 100. For example, in the context of vehicles, the vehicles may be classified as semi-trucks, pickups, mobile cranes, cars, or other type of vehicle, each with a unique color. Inner chart 106 will therefore display a color coded pie chart representing the percentage of vehicles in the cluster 100 that make up each class. Outer chart 108, for example, depicts color coded status information for each asset in the cluster 100. For example, in the context of vehicles, the vehicles may be moving, stopped, idle, out of contact, or have another status depending upon the specific application. Outer chart 108 will therefore display a color coded pie chart representing the percentage of vehicles in the cluster 100 with each given status. The specific class and status information to be depicted by the charts 106 and 108, as well as the colors assigned to such information, are configurable by the user of the system using known methods. Furthermore, the size, shape, and configuration of the cluster 100 is also modifiable. For instance, in some embodiments, clusters are given different shapes to indicate that the clusters pertain to different types of assets or different types of information. For example, a first cluster may be round, indicating it pertains to vehicles, and a second cluster may be square, indicating it pertains to jobs to be performed during a day. As the jobs are completed, the colored status information for the cluster changes, reflecting the progress made on the job. In some embodiments, the corners of a square or other angular cluster changes colors. For ease of understanding only, the present application generally depicts dusters herein as circles or squares, with circular inner and outer charts.

The information in the cluster 100 is, in some embodiments, updated in real time. For example, as a vehicle leaves or enters the bounding area 102, the numerical value 104 and charts 106 and 108 are updated accordingly. If the status of an asset changes, the outer chart 108 likewise is updated. Such real-time updates are configurable by the user of the system and may be dependant on the communication systems of the assets. For instance, a user of the system may only desire updates once every five minutes. Alternatively, an asset may be programmed to only provide its location and other status information once every thirty seconds, or only when its status or location changes. Those of ordinary skill in the art will therefore recognize the information displayed by the cluster 100 may, in some embodiments, be delayed based on these contingencies or preferences. Alternatively, the updating of information can be done, for example, when the map is resized.

In some embodiments, not all assets in a specific bounding area 102 are included in the cluster 100. For instance, the cluster 100 may only comprise assets of a certain type, such as only vehicles. In other embodiments, the cluster 100 may only comprise assets owned by a specific entity, such as a single rental car company. The specific assets that are included in a cluster 100 may be selected based on numerous attributes, such as the asset's status, class, physical attributes, type, ownership information, etc. In some embodiments (not shown), the bounding area 102 comprises more than one cluster. Each of clusters may comprise assets that, but for the preferences of the user specified to the system, would be included in the same cluster, or assets that, due to different attributes, belong in different clusters. For the sake of clarity, the following discussion only discusses a single duster 100 being within a single bounding area 102. The bounding area 102, as shown, is a square or rectangle, but other shapes, such as polygons, circles, triangles, or other regular or irregular shapes or any combination thereof, are used in other embodiments. Furthermore, in some embodiments, the bounding area 102 may have different colors or levels of opacity. By altering the alpha channel value (the opacity) and/or the color of the bounding area 102, additional information can be displayed pertaining to each bounding area 102 displayed on a map, such as which bounding area 102 contains more assets.

Referring now to FIG. 2, depicted is a geographical map 200 comprising a plurality of clusters 100 a-n, according to an embodiment. As depicted, the map 200 displays the entire continental United States. Because of the high-level of the map 200, each cluster 100 and its corresponding bounding area 102 a-n covers a large area of the United States, and therefore includes a relatively large number of assets. For instance, cluster 100 a, whose bounding box 102 a encompasses Los Angeles, contains over four-thousand, five-hundred assets. In other embodiments, however, a large area can encompasses only a small number of assets.

Referring now to FIG. 3, depicted are additional informational features available to the user of the system, according to one embodiment. As depicted, when a user selects a cluster 100, such as when a user points his or her mouse over the cluster 100, clicks on the cluster 100, uses a touch screen to select the cluster 100 or otherwise selects or interacts with the cluster 100, the system provides the user with certain information pertaining to the assets in the cluster 100. For instance, depicted is a pop-up box 300 with detailed asset information for each asset in the cluster 100. The pop-up box 300 displays, for example, the name, status, and class of each asset in the cluster 100, and provides the option for the user to look at the history for each asset by clicking the “Today” or “Yesterday” links. In some embodiments, scaled icons representative of the assets are depicted on the map to provide visual identification to the user where the assets are. In some embodiments, the user can also click on each asset in the pop-up box 300 to be directed to the specific location of the asset on the map. The embodiment discussed with reference to FIG. 3 is useful for clusters 100 with a few assets, such as, for example, four or fewer assets, but may provide too much detailed information when a cluster has a many assets.

Referring now to FIG. 4, depicted are additional informational features available to the user of the system when a cluster 100 contains a large number of assets, according to an embodiment. As depicted, when a user selects a cluster 100, the system provides the user with pop-up box 400 displaying certain high level information pertaining to the assets in the cluster 100, such as general status and category information about the assets. In some embodiments, the cluster 100 further displays a “+” sign or similar notation 402, signifying even more information pertaining to the assets in the cluster 100 is available. Referring now to FIG. 5, when the user clicks the “+” sign 402, in one embodiment, a scrollable list 502 of the cluster's assets is displayed to the user in the pop-up box 400. The user can select an asset from the scrollable list 502, the detailed information of which is thereafter displayed pop-up box 400 in a similar manner to that depicted in FIG. 3. In this manner, detailed information pertaining to each asset in the cluster 100 is available to the user, even when the cluster 100 has a large number of assets.

Referring now to FIGS. 6a and 6b , the function of dusters with reference to a specific geographical location, according to an embodiment, is now discussed in more detail. Depicted in FIG. 6a is a cluster 600 with a bounding area 602 encompassing much of Eureka, Calif. As is apparent, the cluster 600 comprises 34 assets. When a user zooms in on the cluster 600, as depicted in FIG. 6b , duster 600 is replaced with four new clusters 604-610. Collectively, the new clusters 604-610 comprise the same assets as cluster 600. New clusters 604-610, however, are more accurately positioned on the map to reflect the location of their underlying assets. Thus, as depicted in FIG. 6b , a user can see there are 3 assets in Fortuna, and 2 assets in McKinleyville, with the remaining assets located near Eureka and Fields Landing. If a user zooms in to the point where it is useful to display individual assets, a cluster is replaced with the accurate real-time location of each asset within the cluster. Alternatively, in some embodiments, a user can click one of the clusters 604-610 to display the location of each of its assets. If a user zooms out of a specific area, such as zooming out from FIG. 6b to FIG. 6a , or from FIG. 6a to FIG. 2, the clusters are combined and become more general and less tied to a specific spatial location. Thus, the rendering and re-rendering of maps and their respective clusters is hierarchical.

In some embodiments, the structure of assets and clusters can be thought of as follows:

(a) Asset

-   -   CLASS     -   STATUS     -   ATTRIBUTES

(b) Point

-   -   COMPRISING: Assets     -   LOCATION (longitude, latitude)

(c) Zone

-   -   COMPRISING: Points

(d) Area

-   -   COMPRISING: Zones

(e) Regions

-   -   COMPRISING: Areas         and so on, through higher levels of clusters.

The manner in which the system clusters assets (or clusters) and splits clusters as discussed above is now described in more detail, according to an embodiment. Referring to FIG. 7, depicted is a flow chart 700 describing in detail the creation of a cluster. First, at step 702, the latitudinal and longitudinal coordinates of the item to be clustered (either an asset or a cluster) are determined, and, using standard reprojection techniques, are converted to x and y pixel coordinates based on the user's display. Next, in step 704, a box (or other shape) is created around the x and y coordinates indicative of the size of the item's icon size. For instance, in some embodiments, the icon a user sees for a cluster is 30 pixels by 30 pixels. Thus, in step 704, a 30×30 pixel box is placed around the determined x and y coordinates for such cluster. In step 706, an R-Tree, a well-known data structure familiar to those with skill in the art, is queried with the box to determine whether the box is already in the system. As shown in outcome 708, if the box is already part of an existing cluster in the system, the box and its item is added to that cluster. Otherwise, as shown in outcome 710, the box and its item are added as a new cluster. The forgoing process repeats for each item to be clustered. While the embodiments are described herein with reference to an R-Tree, those of ordinary skill in the art will recognize other types of trees and data structures may be used to implement other embodiments, and that the type and configuration of such data structures will depend, for example, on the specific application and functionality desired.

Referring now to FIGS. 8a-d , depicted is a graphical example of the steps carried out in the flow chart 700, according to an embodiment. As shown in FIG. 8a , and as described with reference to step 702, assets 100 a-100 c with real world latitudes and longitudes are reprojected to x and y pixel coordinates based on a user's display 800. In FIG. 5b , and in accordance with step 704, a box or other icon shape 802 a-c is created around each asset 100 a-c. In accordance with steps 706-710, each box 802 a-c is then used to query the R-Tree. The R-Tree is first queried with box 802 a. Since the R-Tree is empty, the R-Tree will not return a result, and box 802 a is added to the R-Tree as a new cluster 804 a, as shown in FIG. 8c . The R-Tree is next queried with box 802 b. As depicted in FIG. 8b , since there is no overlap between box 802 a (which is already in the R-Tree) and box 802 b, the R-Tree again will not return a result, and box 802 b is added to the R-Tree as a new cluster 804 b. The R-Tree is next queried with box 802 c. As shown in FIG. 8b , there is overlap between box 802 b and 802 c. The R-Tree will therefore return cluster 804 b as a result, and box 802 c is added that cluster, as shown in FIG. 8c . As shown in FIG. 8c , cluster 804 b expands to comprise boxes 802 b and 802 c. As a result of the foregoing steps, the two clusters 804 a-b are depicted to the user, with the underlying boxes and asset information are no longer displayed, as shown in FIG. 8 d.

In some embodiments, the method described with reference to FIGS. 7 and 8 may produce clusters with too many items (either too many assets or other clusters). In order to make the clusters that have been created more usable, the clusters are thereafter split into smaller, more usable clusters. By splitting clusters, the information contained in the clusters is, in some embodiments, more evenly distributed across the user's screen view.

In some embodiments, clusters are split if they are either horizontally or vertically larger than a defined variable M (cluster maximum size). This variable, for example, is based on the resolution of the user's screen and on the size of typically icons used with the system. On a standard screen using icons of 32 pixels wide, M is, in some embodiments, set at 100 pixels. Those of ordinary skill in the art will recognize that other values for M may be optimal, depending on the user's screen's resolution and size, the size of the icons used in connection with the system, or other variables.

If a cluster is to be split, then the cluster is split both horizontally and vertically. Vertical and horizontal maximum pixel values for the new clusters are, in some embodiments, based on the following formulas: Y _(split) =M−2(ICON _(width)) X _(split) =Y _(split)/2+Y _(split) Where Y_(split) is the maximum horizontal pixel value and X_(split) is the maximum vertical pixel value, and ICON_(width) is the width, in pixels, of the asset or cluster icons. The foregoing formulas take into account the dimensions of the icons to ensure clusters will not overlap on a user's screen. Based on the foregoing, where M is set to 100 pixels and the icons are 32 pixels, each new cluster must be less than 54 pixels wide, and must be less than 36 pixels tall.

Referring now to FIGS. 9A, 9B, and 9C, depicted is a process for splitting a cluster 900 according to an embodiment. For example, given a cluster with a width of 132 pixels wide, the cluster is first split horizontally in step 902 into the minimum number of sections for which each section is less than X_(split) (54 pixels) wide. The cluster is therefore first divided into three sections, each with a width of 44 pixels. As shown in step 904, each section obtained in step 902 is then split horizontally into sections less than Y_(spilt) (36 pixels) tall. As a result, the original cluster 900 is, divided into 12 slots 906 a-l, each with dimensions of 44 pixels by 30 pixels. In step 906, the new clusters are created. In some embodiments, the even numbered slots are retained (i.e. slots 908 a, 908 e, 908 e, 908 g, 908 i, and 908 k), while the odd numbered slots are discarded. Any items in the odd numbered slots are moved one slot up (i.e. items in slot 908 b are moved to slot 908 a, and so on). The retained slots become the new clusters.

Referring now to FIG. 10, depicted is an example of items being moved from odd slots 908 b and 908 d to even slots 908 a and 908 c, according to an embodiment. As depicted, the odd slots 908 b and 908 d are divided in half horizontally, as shown with the dotted lines 1002 a and 1002 b. Items in the odd numbered slots 908 b and 908 d that are above their respective dotted lines 1002 a and 1002 b are moved to the even numbered slots above, while items in the odd numbered slots 908 b and 908 d that are below their respective dotted lines 1002 a and 1002 b are moved to the even numbered slots below. Where, as in the case of slot 908 d, there is no even numbered slot below the odd numbered slot, all of the items in the odd numbered slot are moved to the even numbered slot above. Thus, as depicted, all of the items in odd slot 908 d are moved to even slot 908 c.

Referring now to FIG. 11, depicted is a sample cluster 1100, with reference to a display screen 1102, that is to be split, according to an embodiment. As is apparent, cluster 1100 comprises 20 items (either assets or smaller clusters). As shown in FIG. 12, the cluster's items (indicated by Xs in the screen 1102) are located near both vertical edges of the screen 1102. As shown in FIG. 13, cluster 1100 (not shown) is split according to the embodiments discussed above with reference to FIGS. 9 and 10. The items in odd slots (1302 b, 1302 d, and 1302 f) are moved to the even slots 1302 a, 1302 c, and 1302 e. As shown in FIG. 14, three resulting new clusters 1402 a-e are created. The final result, as shown in FIG. 15, are new clusters 1402 a-e shown to the user in place of the old duster, while the underlying items in the clusters 1402 a-c are hidden from view.

Referring now to FIG. 16, depicted is an overall system diagram 1600 of components and devices used in connection with the forgoing systems and methods, according to an embodiment. Each asset (not shown) comprises a communication device 1602 a-c. For instance, a vehicle may have a small transceiver device installed in its cabin, or an individual may carry a smartphone or similar device with location determination capabilities. Such devices 1602 a-c may utilize, for example, GPS, inertial (gyro) systems, or cellular network based technologies, such as triangulation, to determine the latitude and longitude information for the asset.

Location, status, alarm, class, speed, and other types of pertinent information pertaining to a devices' asset may be provided by the devices 1602 a-c to a central processing system 1604. In some embodiments, the devices 1602 a-e communicate such information in real time. In other embodiments, such information is transmitted periodically, at random intervals, or on an alarm condition. Such transmissions are made, in some embodiments, via a wireless or satellite based communication system and/or over the internet or similar wide area network 1606, to the central processing system 1604.

The central processing system 1604, in some embodiments, comprises one or more web servers 1608 in communication with one or more databases 1610. The web servers 1608 may, in some embodiments, have high performance or computer clustering capabilities. The central processing system 1604, operates, in some embodiments, as follows:

-   -   Information received by the devices 1602 a-c is stored in the         databases 1610.     -   The web servers 1608 receive update requests from a client 1612         a-c via the Internet or similar wide area network 1614     -   The central processing system 1604 accesses pertinent         information from the database 1610 and performs the clustering         and map delivery processes discussed above in response to         received requests, and     -   The web servers 1604 transmit the resulting data to the client         1612 a-c via the network 1614.

In some embodiments, the central processing system 1604 utilizes distributed or cloud computing capabilities and/or technology. In some embodiments, the central processing system 1604 shares computing responsibilities with a requesting client 1612 a-c. In other embodiments, the central processing system 1604 is responsible for all or substantially all of the computing responsibilities. A benefit of the foregoing arrangements, in some embodiments, is that the amount of data that needs to be transferred from the web server 1608 to the client 1612 a-c is very small. In some embodiments, little, if any, of the underlying asset information is transferred to clients 1612 a-c. In these embodiments, merely the high-level cluster information showing the aggregated asset information (e.g. charts, numerical value, and/or bounding area information, such as that discussed with reference to FIG. 1) is transferred to the clients 1612 a-c. These embodiments make it is possible to deal with a practically unlimited number of items, even when having a limited network capability and/or a hardware client 1612 a-c with limited processing ability. Those of ordinary skill in the art will recognize that networks 1606 and 1614 may be the same or different networks. In some embodiments, both such networks will be the Internet. In other embodiments, networks 1606 and 1614 may comprise private and/or public networks.

A client 1612 a-c may be, for example, a personal computer or a smart phone. In other embodiments, a client 1612 a-c may itself be a server or central computer which is configured to transmit the information received by the central processing system 1640 to end-user clients (not shown). In some embodiments, the clients 1612 a-c comprise a graphical user interface displayed in a browser window of a browser application. Such an arrangement permits an end user of a client 1612 a-c to easily view the map, geographic information, cluster information, and the underlying asset data provided by the central processing system 1604. Thus, the system and its smart zooming capabilities can be utilized by any user with a client computing device capable of running a web browser and accessing a wide area network, such as the Internet.

In some embodiments, the graphical user interface is implemented using HTML, JavaScript, CSS, BON, and/or XML programming. Such programming may be AJAX compliant. In some embodiments, a dynamic HTML page or XML content is created by the central processing system 1604 in response to a request by a client 1612 a-c. Such interaction, in some embodiments, proceeds by the user of a client 1612 a-c making XML API calls and/or Java Applet calls to the web server 1608 of the central processing system 1604. Using the techniques previously discussed, the central processing system 1604 generates dusters, asset information, and or other information requested by the user, and provides such content, along with the corresponding map data, to the client 1612 a-c. The graphical user interface of the browser window thereafter displays such content for viewing by a user.

The smart zoom system and its graphical user interface can be implemented using technologies other than those described. For instance, in one embodiment, the graphical user interface is implemented as an Adobe Flash object. In some embodiments, where the graphical user interface is implemented using Flash, the graphical user interface is embedded in an HTML page and executed by a Flash compatible plug-in for the browser application. The Flash object stores data files and/or communicates with the central processing system receive updated map, cluster, and asset information. In other embodiments, technologies such as Java, Java Applets, Synchronized Multimedia Integration Language (SMIL), or Microsoft Silverlight are used to implement the graphical user interface and to interact with the central processing system 1604. In other embodiments, the graphical user interface is executed by a standalone player external from the browser application or other specialized program used to access the central processing system 1604.

As is apparent, the described smart zoom clustering methods and systems allow diverse user tools and interfaces to permit any number of end user clients to visualize hundreds or thousands of assets and their real time location and status. By utilizing the forgoing smart zoom systems and methods, a vehicle fleet or other asset manager can quickly and easily determine the status of hundred of assets, identify problems with the assets, redeploy assets as needed, and make other managerial decisions in a manner not possible using other methods and systems.

A further embodiment is computer readable code or program instructions on one or more computer readable mediums capable of carrying out processes discussed above. A computer readable medium is any data storage device that is capable of storing data, or capable of permitting stored data to be read by a computer system. Examples include hard disk drives (HDDs), flash memory cards, such as CF cards, SD cards, MS cards, and xD cards, network attached storage (NAS), read-only memory (ROM), random-access memory (RAM), CD-ROMs, CD-Rs, CD-RWs, DVDs, DVD-Rs, DVD-RWs, holographic storage mediums, magnetic tapes and other optical and non-optical data storage devices. The computer readable medium can also be in distributed fashion over multiple computer systems or devices which are coupled or otherwise networked together and capable of presenting a single view to a user of the medium.

Yet another embodiment is a computer system or similar device configured to access computer readable code or program instructions from a computer readable medium and to execute program instructions using one or more CPUs to carry out embodiments as described. Such computer system can be, but is not limited to, a typical personal computer, microcomputers, a handheld device such as a cell phone, PDA, BlackBerry, or a more advanced system such as a computer cluster, distributed computer system, server accessed over wired or wireless devices, a mainframe, or a supercomputer. In another embodiment, the server(s) of the system are also stored in and accessed from the computer readable medium. In other embodiments, they are implemented using hardware.

In some embodiments, some or all of the content stored in the computer readable medium is transmitted via a similar network. In other embodiments, the central processing system generates signals or instructions based on the results of the program instructions and/or the contents of the computer readable medium.

In other embodiments, the foregoing systems and methods are applicable to environments other than those in two dimensions. For instance, three dimensional clusters, maps, bounding areas, and assets can be implemented using the same techniques and methods discussed above.

The invention has been described herein using specific embodiments for the purposes of illustration only. It will be readily apparent to one of ordinary skill in the art, however, that the principles of the invention can be embodied in other ways. Therefore, the invention should not be regarded as being limited in scope to the specific embodiments disclosed herein. 

The invention claimed is:
 1. A system for controlling display of information pertaining to a fleet of vehicles, the system comprising: a memory device configured to store position information for a plurality of vehicles in a vehicle fleet, the position information comprising locations of the plurality of vehicles on a network of streets in a geographic region; and a hardware processor in communication with the memory device, the hardware processor configured to: retrieve the position information from the memory device, assign each of the plurality of vehicles to one of a plurality of groups according to the position information, generate a vehicle management user interface comprising a map and a plurality of group indicators including a first group indicator and a second group indicator, the map depicting at least part of the geographic region, the plurality of group indicators being overlaid on the map and each group indicator providing status information for the each of the plurality of vehicles assigned to the one of the plurality of groups, wherein the first group indicator corresponds to a first group of the plurality of groups, the first group indicator comprising a geometric shape having an inner area, the inner area comprising an outer periphery section encompassing a perimeter of the inner area and denoting a total number of vehicles assigned to the first group at a center of the inner area, the outer periphery section depicting the status information for the one or more vehicles assigned to the first group as coloring of portions of the outer periphery section in a plurality of colors, wherein a first portion of the portions of the outer periphery section is a first color of the plurality of colors denoting that a first set of the one or more vehicles assigned to the first group has a first status, and a second portion of the portions of the outer periphery section is a second color of the plurality of colors denoting that a second set of the one or more vehicles assigned to the first group has a second status different from the first status, the first status and the second status comprising two of (i) a vehicle moving status, (ii) a vehicle stopped status, and (iii) a vehicle idling status, and output the vehicle management user interface to an administrator device for presentation on a display to an administrator of the vehicle fleet.
 2. The system of claim 1, wherein the position information is updated as the plurality of vehicles travel on the network of streets, and the hardware processor is configured to change a size of the first portion responsive to one of the plurality of vehicles entering or leaving a first bounding area associated with the first group, the first bounding area encompassing an area of the geographic region.
 3. The system of claim 1, wherein a third portion of the portions of the outer periphery section is a third color of the plurality of colors denoting that a third set of the one or more vehicles assigned to the first group has a third status different from the first status and the second status, the first status comprising the vehicle moving status, the second status comprising the vehicle stopped status, the third status comprising the vehicle idling status.
 4. The system of claim 1, wherein a third portion of the portions of the outer periphery section is a third color of the plurality of colors denoting that a third set of the one or more vehicles assigned to the first group has a third status different from the first status and the second status, the first status comprising the vehicle moving status, the second status comprising the vehicle stopped status, the third status comprising a vehicle out of contact status.
 5. The system of claim 1, wherein the hardware processor is configured to change a size of the first portion responsive to a user input indicative of the administrator zooming in on the map.
 6. The system of claim 1, wherein the hardware processor is configured to change a size of the first portion responsive to a user input indicative of the administrator zooming out on the map.
 7. The system of claim 1, wherein a size of the first portion relative to a size of the second portion is indicative of a total number of vehicles in the first set relative to a total number of vehicles in the second set.
 8. The system of claim 1, wherein a size of the first portion depends on a total number of vehicles in the first set relative to the total number of vehicles assigned to the first group.
 9. The system of claim 1, wherein the geometric shape is a circle.
 10. The system of claim 1, wherein the hardware processor is configured to: assign the one or more vehicles assigned to the first group because of a proximity of the one or more vehicles assigned to the first group to a first bounding area associated with the first group, the first bounding area encompassing an area of the geographic region different from other areas of the geographic region encompassed by other bounding areas associated with the plurality of groups other than the first group, and not display the first bounding area on the map with the first group indicator.
 11. The system of claim 1, wherein the hardware processor is configured to assign the one or more vehicles assigned to the first group because of a proximity of the one or more vehicles assigned to the first group to a first bounding area associated with the first group, the first bounding area encompassing an area of the geographic region different from other areas of the geographic region encompassed by other bounding areas associated with the plurality of groups other than the first group, a shape of the geographic shape being different from a shape of the first bounding area.
 12. A method of controlling display of information pertaining to a fleet of vehicles, the method comprising: by a computer system comprising computer hardware: retrieving, from a memory device, position information for a plurality of vehicles in a vehicle fleet, the position information comprising locations of the plurality of vehicles on a network of streets in a geographic region; assigning each of the plurality of vehicles to one of a plurality of groups according to the position information; generating a vehicle management user interface comprising a map and a plurality of group indicators including a first group indicator and a second group indicator, the map depicting at least part of the geographic region, the plurality of group indicators being overlaid on the map and each group indicator providing status information for the each of the plurality of vehicles assigned to the one of the plurality of groups, wherein the first group indicator corresponds to a first group of the plurality of groups, the first group indicator comprising a geometric shape having an inner area, the inner area comprising an outer periphery section encompassing a perimeter of the inner area and denoting a total number of vehicles assigned to the first group at a center of the inner area, the outer periphery section depicting the status information for the one or more vehicles assigned to the first group as coloring of portions of the outer periphery section in a plurality of colors, wherein a first portion of the portions of the outer periphery section is a first color of the plurality of colors denoting that a first set of the one or more vehicles assigned to the first group has a first status, and a second portion of the portions of the outer periphery section is a second color of the plurality of colors denoting that a second set of the one or more vehicles assigned to the first group has a second status different from the first status, the first status and the second status comprising two of (i) a vehicle moving status, (ii) a vehicle stopped status, and (iii) a vehicle idling status; and outputting the vehicle management user interface to an administrator device for presentation on a display to an administrator of the vehicle fleet.
 13. The method of claim 12, wherein the position information is updated as the plurality of vehicles travel on the network of streets, and further comprising: by the computer system comprising computer hardware: changing a size of the first portion responsive to one of the plurality of vehicles entering or leaving a first bounding area associated with the first group, the first bounding area encompassing an area of the geographic region.
 14. The method of claim 12, wherein a third portion of the portions of the outer periphery section is a third color of the plurality of colors denoting that a third set of the one or more vehicles assigned to the first group has a third status different from the first status and the second status, the first status comprising the vehicle moving status, the second status comprising the vehicle stopped status, the third status comprising the vehicle idling status.
 15. The method of claim 12, further comprising: by the computer system comprising computer hardware: changing a size of the first portion responsive to a user input indicative of the administrator zooming in or out on the map.
 16. The method of claim 12, wherein a size of the first portion relative to a size of the second portion is indicative of a total number of vehicles in the first set relative to a total number of vehicles in the second set.
 17. A method of controlling display of information representing a plurality of vehicles, the method comprising: by a computer system comprising computer hardware: determining locations of a plurality of vehicles in a geographic region; assigning each of the plurality of vehicles to one of a first group and a second group, the first group encompassing one or more vehicles of the plurality of vehicles that are within a first area of the geographic region, the second group encompassing one or more vehicles of the plurality of vehicles that are within a second area of the geographic region different from the first area; generating a vehicle management user interface comprising a map, a first group indicator, and a second group indicator, the map depicting the first area and the second area with the first group indicator overlaid on the first area and the second group indicator overlaid on the second area, the first group indicator comprising status information for the one or more vehicles of the first group, the second group indicator comprising status information for the one or more vehicles of the second group, wherein the first group indicator comprises a geometric shape having an inner area, the inner area comprising an outer periphery section encompassing a perimeter of the inner area and denoting a total number of vehicles assigned to the first group at a center of the inner area, the outer periphery section depicting the status information for the one or more vehicles of the first group as a first color coded portion, a second color coded portion, and a third color coded portion of the outer periphery section, wherein the first color coded portion is a first color denoting that at a first set of the one or more vehicles of the first group has a first status, and the second color coded portion is a second color different from the first color denoting that a second set of the one or more vehicles of the first group has a second status different from the first status, the first status and the second status comprising two of (i) a vehicle moving status, (ii) a vehicle stopped status, and (iii) a vehicle idling status; and outputting the vehicle management user interface to an administrator device for presentation on a display to an administrator of the plurality of vehicles.
 18. The method of claim 17, further comprising: by the computer system comprising computer hardware: changing a size of the first color coded portion responsive to a user input indicative of the administrator zooming in or out on the map.
 19. The method of claim 17, wherein said assigning comprises assigning the one or more vehicles of the first group to the first group because of a proximity of the one or more vehicles of the first group to a first bounding area associated with the first group, the first bounding area encompassing the first area, said assigning comprises assigning the one or more vehicles of the second group to the second group because of a proximity of the one or more vehicles of the second group to a second bounding area associated with the second group, the second bounding area encompassing the second area, and said generating comprises generating the vehicle management user interface so that the first bounding area and the second bounding area are not displayed on the map.
 20. The method of claim 17, wherein said assigning comprises assigning the one or more vehicles of the first group to the first group because of a proximity of the one or more vehicles of the first group to a first bounding area associated with the first group, the first bounding area encompassing the first area, and the geometric shape of the first group indicator being different from a shape of the first bounding area. 